SOT143 Polarity Pin |
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ejkreiner
Active User Joined: 30 Mar 2012 Location: Cincinnati, OH Status: Offline Points: 37 |
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Posted: 23 Apr 2014 at 6:16am |
I am building a SOT143 package and when I calculate the footprint the larger pad for polarity is on Pin 1. I need to change it to Pin 2 and I thought previously FPE had that functionality added but I am not seeing how I can change the polarity. Can you advise? |
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Tom H
Admin Group Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5716 |
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Did you try the "Mirror" feature? |
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ejkreiner
Active User Joined: 30 Mar 2012 Location: Cincinnati, OH Status: Offline Points: 37 |
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I did Tom. Polarity needs to be on pin 2, which is lower left as you are seeing the footprint preview.
I have tried every combination of L/R/U/D and mirror and get the polarity set on the LL where I want it, but when I redorder the pins the polarity pad is flipping to the UR pin and the pin number reorder themselves from 1-4 CCW with pin 1 UL to to 1-4 CW with pin one now LL and polarity pad on pin 3. |
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Jeff.M
Admin Group Joined: 16 May 2012 Location: San Diego Status: Offline Points: 477 |
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After building the part left-click on the pin you want to be the new pin one. Then right-click and select 'Reorder Pins'.
Left-click on the pins in the order you want them to increment. Right-click and select 'Done Reordering' and save or build.
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ejkreiner
Active User Joined: 30 Mar 2012 Location: Cincinnati, OH Status: Offline Points: 37 |
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Jeff, when I calculate the part the pin order is set the way it needs to be. Pin one is upper left in the preview window and the pins increment 2-4 counterclockwise. Pin 1 has the larger polarity pad. I need the polarity pad to be on pin 2. It seems to be blind luck using mirror/orientation buttons to get the larger pad on the lower left pin. When I do that and try to reorder the pins back to where they need to be it goes haywire.
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ejkreiner
Active User Joined: 30 Mar 2012 Location: Cincinnati, OH Status: Offline Points: 37 |
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I have captured screenshots of what it is doing. Is there a way to upload them here or can I email them to you?
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Jeff.M
Admin Group Joined: 16 May 2012 Location: San Diego Status: Offline Points: 477 |
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email to: jeff.mellquist*at*pcblibraries*dot*com
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ptkvgl
Active User Joined: 04 Jun 2014 Status: Offline Points: 19 |
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Hello!
Did you get this problem solved? I've got the same one and can't understand how to use the "Reorder Pins" functionality... I would like to generate a "SC-82AB" footprint. Unfortunately I can't get pin 1 (small) and pin 2 (large) placed according to the datasheet... Please could you tell me, what am I doing wrong? Thanx in advance... |
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Tom H
Admin Group Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5716 |
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This is fixed in V2015.06. This is a SOT143 Reverse.
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ptkvgl
Active User Joined: 04 Jun 2014 Status: Offline Points: 19 |
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Hi Tom,
In fact, pretty easy... Thank you very much and have a nice day... |
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